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<p>[QUOTE=&quot;dougsmit, post: 3006867, member: 19463&quot;]+1&nbsp; There is so much that can happen when you bury something in various ground for long periods of time.&nbsp; It is so much worse when you add the factor that a 20%&nbsp; silver coin may have a lot of things in that 80% that can react differently and leave different results.&nbsp; Not all are copper/silver.&nbsp; Adding lead, tin zinc and thing yet to be understood gained by recycling old scrap will require study.&nbsp; I would be interested in seeing what the coin measures now as opposed to what it was when made.&nbsp; The silver once there may have departed long ago. How do we prove that?[/QUOTE]</p><p><br /></p>

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